package com.shf2;

import java.util.Calendar;
import java.util.Scanner;

public class CalendarTest {
  public static void main(String[] args) {
    Scanner sc=new Scanner(System.in);
    System.out.println("请输入年份：");
    int year=sc.nextInt();

    Calendar c=Calendar.getInstance();
    c.set(year,2,1);

    c.add(Calendar.DATE,-1);

    int date=c.get(Calendar.DATE);
    System.out.println(year+"年的2月份有"+date+"天");
  }
}
